1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ray Of Light [21]
4 years ago
10

Solve x2 - 8x - 9 = 0. Rewrite the equation so that it is of the form x2 + bx = c.

Mathematics
1 answer:
stira [4]4 years ago
7 0
X^2 - 8x-9=0
D = b^2- 4*a*c = 64- 4* (-9) = 64+36=100 =10^2
X1 = (8-10)/2 = -1
X2= (8+10)/2= 9


You might be interested in
What is 3,996 + 7899
ddd [48]
3996 + 7899 = 11895

:)
3 0
3 years ago
Read 2 more answers
PLEASE CAN SOMEONE ANSWER THIS!!!! DEADLINE SOON!!!
Verdich [7]
Hello There!

I believe that the relationships that can help you solve this problem are that the angle is Complementary and Supplementary. It is complementary because within the angle, there is an angle that is 90°. It is also supplementary because the angle itself is 180° making the angle supplementary.

I hope this helps!
8 0
3 years ago
A bacteria culture begins with 4 bacteria which double in size every hour. How many bacteria exist in the culture after 8 hours?
Levart [38]
4 Bacteria double per hour to give 8 bacteria then in 8 hours it will become 64 then this 64 doubles to give us 128
5 0
4 years ago
Read 2 more answers
HELP PLEASE ASAP NO LINKS OR SCAMS ​
kozerog [31]

Answer:

1

   a. 5

   b. 32

   c.  130

   d. 26

2

    a. 5.65234

    b. 5652.34

    c. 8.1253758

    d. 8125375.8

Step-by-step explanation:

3 0
3 years ago
if the price ticket to a museum was $15 last year and $30 this year what is the percentage increase in ticket price and last one
Darina [25.2K]

100% increase. If you think about it, a 50% increase in price would be 7.5 (15/2), so therefore a 100% increase would just be $15.

7 0
3 years ago
Read 2 more answers
Other questions:
  • Eli's office recycled a total of 12 kilograms of paper over 6 weeks. After 9 weeks, how many kilograms of paper will Eli's offic
    13·2 answers
  • What are the x and y-intercepts of the line described by the equation?
    10·2 answers
  • The value of the expretion 7+3²+(12-8)÷2×4 is _________
    8·2 answers
  • Place 0.05 , -3 , -22 , 1/2, -1/8 , 0.8 on a Number line
    8·1 answer
  • Niki scored a 78 on her first test and an 85 on her second. Niki forgot what she got on her third test bit she knows that her av
    10·1 answer
  • In a box of chocolate candies, 25 of the chocolates have peanuts. 6 of the chocolates have peanuts.
    11·1 answer
  • What is eight more than one fourth of d
    15·2 answers
  • On a road map, the distance between two cities is 3.5 inches. If 1 inch represents
    12·1 answer
  • Solve for all values of x by factoring.<br> x2 + 10x + 8 = x
    13·2 answers
  • PLEAS HELP ME!!
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!